Star wars: The Empire Strikes back (1980) by Irvin Kershner. In the scrap room on Bespin where C-3PO is dismantled next to the furnace you can see the remains of what appears to be the assassin droid IG-88. One of the bounty hunters hired to track down Solo, later killed by Boba Fett.
In Lord of the Rings: The Fellowship of the Ring (2001) after Boromir's death, Aragorn takes his vambraces (wrist guards) and wears them for the rest of the trilogy. Viggo Mortensen came up with the idea as a sign of respect, and a symbol of Aragorn's commitment to his promise to protect Gondor.
Movie reviewers criticized Toby Jones' performance in Tinker, Tailor, Soldier, Spy because he goes in and out of a Scottish accent. What those critics did not know, is that his insecure character does this in the book.
In Iron Man 2, the Ex-Wife fails not because it’s ‘Hammer Tech’ but because Rhodey failed to use it probably. Earlier Justin Hammer says it’s a ‘kinetic-kill side-winder vehicle’. Meaning it needs to be accelerated to an extremely high velocity to be effective. Rhodey was way to close to his target.
During the delivery scene in Children of Men, Theo is about to finish off the liquor in his flask, but stops and uses it to sterilize his hands instead. One of my favorite character moments of all time.
Near the end of filming Gettysburg (1993), hundreds of Confederate re-enactors spontaneously mobbed Martin Sheen (playing General Lee) to show their appreciation. Sheen, though startled, stayed completely in-character, and the resulting scene was included in the final film.
In The Matrix (1999) Neo stores his computer files in a book called Simulacra & Simulation. Written by the philosopher Jean Baudrillard, it focuses on the subject of reality as a simulation.
The pool hall that Benvolio and Romeo visit at the start of Baz Luhrmann's "Romeo and Juliet" (1996) is in the Globe Theatre. The Globe was the theatre in London where Shakespeare performed most frequently.
In Momento (2000), Guy Pearce has been staying in a hotel for a few days, but because of his memory, he walks into the door that is required to be pulled. This shows the attention to detail the film makers had put into this movie.
In this long, telescopic shot in "Tombstone" (1993), Wyatt Earp rides to war but the director held a blank space wide enough to represent the two men not present - Wyatt's brothers Virgil & Morgan
According to James Gunn, in Guardians of the Galaxy vol 2, Groot always freezes when Drax catches him dancing because he knows Drax disapproves of it. Drax explains that he was attracted to his late wife because she steadfastly did not dance.
In “Rebel Without a Cause”, Buzz calls out to Judy “Hey Stella!” when the gang picks her up in their first appearance. This is a reference to the infamous scene of Marlon Brando screaming outside in “A Streetcar Named Desire” which released 4 years prior.
In Attack of the Clones Obi-Wan can be seen studying a bust of Count Dooku. Dooku would later be revealed as a Sith, but at the time he had just left the Jedi Order due to political differences.
In The Secret Life Of Pets, when Chloe tells Pops she’s a cat he replies, “Well, nobody’s perfect”. This is a nod to a scene between Jack Lemmon’s character, Daphne and Osgood Fielding in Some Like It Hot when Daphne reveals that she’s really a man.
In LotR the 1st, Crebain from Dunland suddenly come to spy on the fellowship, what afterwards makes them change their way to the Pass of Caradhras. Yet, once Crebain are back to Saruman, they tell him fellowship is about to go through the Pass of Caradhras...
Matt Damon and Ben Affleck included a surprising gay sex scene between two characters in the original script for Good Will Hunting to see if any studios would bother to read the script when pitching the film. Harvey Weinstein was the only producer to question this. Miramax got the film rights.
In The Dark Knight Rises, during their first fight in the sewer, Bane gives away that he isn't the child that escaped The Pit by telling Batman "I didn’t see the light until I was already a man..."
In Despicable Me 3, a monitor can be seen in the background with the arrangement Screen for the Fairlight CMI digital synthesizer. Hans Zimmer, whose studio produced the soundtrack to the movie, is known to be a fan of the CMI.
(Spoilers). In The Descent (2005), multiple references to bats and vampires are made throughout the first act of the film. This all foreshadows the appearance of the crawlers, who were designed to look like Nosfertu
In Avengers:Age of Ultron Tony calls putting Jarvis into vision the "End of the line". Captain America doesnt trust putting Jarvis into vision, as one of his most famous quotes are "Im with ya' till the end of the line"
Blade Runner 2049: It is not stated whether or not Joi has her own personality like that of the replicants or just a manufactured one. But several lines of dialogue make it clear she only tells K what he wants to hear throughout the film or pushing him to buy new products.
The fireplace inscription in Clue (1985) reads "Nouveau Riche Oblige". This is a reference to the French expression "noblesse oblige", meaning "people in nobility have an obligation [to act accordingly]". The nouveau riche were traditionally considered less classy than the nobility.
In Frozen (2013) two men are arguing about which way wood should be stacked. In 2013 there was a heated debate in Norway about stacking wood either bark side up or down, so much so that it became part of the culture. Since Frozen is inspired by Norway it was added in as a nod toward the debate.
In The Greatest Showman (2017), during the final moments of 'A Million Dreams', you can spot signs of the countless other ventures P.T. attempted before he truly became successful with his circus
In The Little Mermaid (1989) a live action reference was used for Ariel while making the film. An actress would improvise scenes from the script to create Ariel’s personality and they were later drawn over to animate the film.
The Grand Budapest Hotel (2014) very funny movie translation: In the Englisch Version the narrator tells the audience that he is “on the edge of his seat or like the locals say gespannt wie ein Flitzebogen”
In the Incredibles (2004) when Edna is showing Elastigirl the suit's GPS capability, it hones in on the location of the suit. In this case, we can see that the film appears to take place somewhere in the Bay Area, close to Pixar's headquarters
Pet Semetary (1989) The picture at Rachel's parents' house is a painting of Zelda as a child, before her spinal meningitis. Gage is later seen wearing a similar outfit (as well as having her red hair) to signify that Zelda has come back through him.
In The Lion King (1994), the characters Timon and Pumbaa were only put in the movie because Nathan Lane and Ernie Sabella auditioned so well together. They were originally auditioned for the hyenas, but were so funny that Timon and Pumbaa was created for them
In Happy Feet (2006) much of Mumble's dancing is based on Fred Astaire. There are 3 black dots above Mumble's ankle to pay homage to the spats worn in old Hollywood musicals, like the ones Astaire appeared in.
In The Hangover, there's a scene right before they meet Carlos' mom where Alan says "It's got, uh, Ted Danson and Magnum P.I. And that Jewish actor." The film he's talking about is 3 Men and a Baby, obviously referencing the characters' current circumstances.
In Zootopia (2016) most computers shown have a touchpad instead of a mouse. Animals with hooves wouldn't be able to use a mouse and presumably if they had a mouse type device it wouldn't be called that.
In The Greatest Showman (2017), there is a scene where Jackman is making a deal with Effron. During this it seems they both drink heavily, but this isn’t true, Hugh makes it seem that he is drinking a lot, but he only takes about 2 shots in the entire scene, while he fools Zach into downing about 5.
In Ready Player One, James Halliday’s favorite song was said to be “Video Killed the Radio Star”. In the same way video replaced radio, Halliday’s creation “The Oasis” replaces videos as the main source of entertainment for the world.
In the first Kingsman, Eggsy orders a gin martini, stirred while staring at an unopened bottle of vermouth. When Harry makes him a martini in the sequel, he makes a stirred martini and there is an unopened bottle of vermouth on the bar, and he directly looks at it.
In Lilo & Stitch (2002) Lilo believes Pudge the fish controls the weather. Her parents were killed in a car accident caused by treacherous rain and she feeds him sandwiches to appease him, in hopes another accident will not happen like the one that took her parents.
In Despicable Me 3 (2017) Gru's long-lost brother Dru lives in Freedonia. The films writer, Cinco Paul, named it after his favorite Marx brother film Duck Soup, where the events of that movie take place.
In The Disaster Artist , Tommy Wiseau has a robot crab on his dash. This is the Transformer Nautilator, described on the wiki as a "genuine card-carrying bungler... as both his peers and superiors struggle in vain to cope with his brand of oafish buffoonery," which fits Tommy well.
[Kill Bill Vol 2] In her fight with the bride Elle has trouble unsheating her sword constantly hitting the walls before she can get it out. Since she has only one eye she has no depth perception.